/Engine/Source/Runtime/Core/Public/Containers/SortedMap.h
Removes the pair with the specified key and copies the value that was removed to the ref parameter.
Whether or not the key was found
bool RemoveAndCopyValue ( [KeyInitType](API\Runtime\Core\Containers\TSortedMap\KeyInitType) Key, [ValueType](API\Runtime\Core\Containers\TSortedMap\ValueType) & OutRemovedValue )